<html>

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>动画倒计时</title>
    <link rel="stylesheet" href="style.css" />
</head>

<body>
    <div class="counter">
        <div class="nums">

            <span class="in">3</span>
            <span class="">2</span>
            <span>1</span>
            <span>0</span>

        </div>
        <h4> 开始中...</h4>
    </div>

    <div class="final">
        <h1>开始</h1>
        <button id="replay">
            <span>点击开始</span>
        </button>
    </div>
</body>
<script src="script.js"></script>

</html>